Lock mechanism.



M. FARCH. LOCK MECHANISM. APPLICATION FILED MAY 29, 1908. Q@ Y Patentedsept. 2s, 1909.

v 4114i O MOGENS FARGH, OF EROGCLYX, NEW YQRK.

LOCK MECHANSM.

Speceation of Letters Patent.

Peuteiited Sept. 289 i909.

Application led 'May 29, 1963. Serial No. @235,64

To all whom it may concer Bc it known that Moennig ihnen, ot Brooklyn,in the county of Kings and State ot New York, have invented u certainneuv and ueerul Improvement in Lock lllechanism, and do hereby declarethat the followinf; is a full and enact description thereof.

My invention relates to un improvement in locke, and especially in lockswhich are adapter for use on do rs.

lily lock is so eonwructed that the single locking bolt therein adaptedto act both as 'a latch for keeping trie door temporarily closed and asa permanent lock for securing the door closed tor any -length of timede- Hired.

it also consists in a very convenient errungement of latch releasingmechanism whereby the dol i handle is provided With a plunger whichcooperates with the latch by the more pressure oi the thumb to retractthe saine when it is desired to open the door.

lu the accompanyin1 drawings Figure 1 shows a horizontal section of edoor equipped with my loch; .and Fig. 2, a vertical 'section of thesaine.

In the drawings 1 is o. door provided with a lock cursingv Q ot' theusuel type, having an end plato 3 for giving the lock casing a tinishedappearance on the edge of the door. The end plate El ie provided with anaperture through which the latch bolt el is adapted to pass. This has atits end projecting through the end plate l -a beveled or curved surface5, so that when the bolt d is beiner used as a latch, the door Will beautomatica l-y secured in place when'closed, as is usuel u ith latchesin general. rlhe rear end of the bolt 4. is .formed into a yoke againsttl e front end G of which a spring' T is designed to coperatc, the rearvend of the Springl 7 abutting against a stationary support 8 securedwithin the lock easing 2. The rear side ot the stationary support 8 isbeveled so as to produce two beveled surfaces 9. Similar, thoughoppoeitely directed beveled surfaces 10 are located at the rear end otthe yoke 5. ln the operative position of the bolt l as shown in Fig. 1,the Said beveled surfaces 9 and 10 form tivo pockets, one on either sideoi the lock casing, und cooperating therewith there are two balls 11,one for either pocket located on either eide of the lock bolt. 'lhelatter are designed to be pushed inwardly when it is desired to releasethe latch 5 by means of thel plungers 12 located within the door knobs13 and extending-through the ends thereof et the points 1l.

ln l l have shown the knob and plunger l cated on one side only ot thedoor, but is to be understood that the door lrnob und plunger on theother side are constructed in exactly the saine manner. lt will also beseen,7 however, that my invention will Work equally Well, if such aconstruction be found desirable, by placingY a door knob and plunger onone side of the door only. ln order to use the bolt eluot only as olatch but also asa loelrj l provide one side et the yoke with anaperture 15 which is of the proper size and so located as 'to receivethe end of a slide bolt 16 held in position by the guides 17. l actuatethe bolt 16 by means ot a lever 18 having eslot 19 in its end whichcooperates with e pin 20 located upon the bolt i6. ne lever 1.8 ispivoted to the lock cesing :it the point 201. The lever 18 could beoperated in any desired manner. l have shown it, however, as oprated bymeans of a small handle or thumb piece 21 projecting through the outersurface of the door. lt is to be understood that instead of the thumbpiece 21, i might substitute any'ordinary #forni oi lock mechanism.

ln the operation of the device, ordinarily the bolt e will be usedmerely as a' latch', in which ease upon the closingv oin the door thebeveled or curved edge 5 thereof Will cooperate with the door casing soas to cause the latch to be pushed baeliwardly into the lock casing 2until the door has become com pletely closed, whereupon the Spring` 7pushes the bolt et forwardly so as to secure the door in its closedposition. Willen now it is Adesired to open the door, one of the han dles 13 is grasped und the plunger 14 located therein depressed. Thiscauses the ball 11 cooperating with the plunger 12, which has beendepressed, to push against the beveled surface 10 located at the rearend of the yoke 5 against the force of the spring' 7 until the end ot'the bolt l is entirely Withdrawn into the lock casing1 Which results inthe release of the door and allowing it to be opened.

When 1t is found desirable to utilize the` bolt e es a permanent lockltor a door foi" any desired period of time, the thumb piece 21 or itsequivalent locking mechanlsm 1s Operated to move the lever 18 so as tointro` duce the end of the bolt 1G into the aperture 15 in the side ofthe yoke 5. When this hustaken place, 1t will be seen that the plungerand ball mechanism for retracting the bolt 4 cannot be operated so as toretract the bolt, and when it is desired to open the door it isfirstnecessary to move the lever l8 so as to Withdraw the bolt 16 fromthe aperture l5 in the side of the yoke 5. The removal of the bolt 16from the aperture then permits the bolt. l to be Withdrawn in the usual'manner by the plunger 12 and ball 11 cooperating therewith.

While I have described my invention above in detail, I do not Wish it tobe anders stood that I am necessarily limited thereby, but considerthatmy invention is a broad one and capable of'many iiiodilications andapplications to different structures, without departing from the spiritthereof.

What I claim isl. In a device of the character described, thecombination ot' a spriiig-actiuited latch and a ball mechanism forretraction' the saine, the ball of said mechanism being adapted toWithdraw the catch by pushing .against it at right angles thereto.

2. In a device of the character describeiil, the combination ot aspring-actuated latch, and a plunger and ball mechanism for retractiiigthe saine, the ball portion of said mechanism being constructed to movesaid latch by pushing against the saine at right angles thereto. f

3. In a device of the character described,

' the combination of a spring-actuated latch having a beveled yoke, aplunger and ball mechanism for retracting tlie'saine coperatingwith thebeveled surface of the yoke.

4. lli a device of the character described,

the combination of a spring-actuated latch having a yoke, the rear endoit vthich is beveled, a spring cooperating Witl-g' the front portionthereof, and a plunger and ball mechanism for retracting the samecoperating with the beveled rear end of the yoke.

5. In `a device of the character described, the combination of aspring-actuated latch having a beveled yoke, a plunger and ballmechanism for retracting the same cooper` ating With the beveled surfaceof the yoke,

and a locking mechanism for preventing -a plunger for rctracting' thesame a ball Working,r at 'one side against the latch and at the otheragainst the Jplunger to convey niotioii from the plunger to the latchand a lever and bolt locking' mechanism adapted to cooperate with aiiaperture 1n the side of the latch for preventing,f the movement ol" thelatch when desired.

l'n testiii'ioiiy that I claiiii the foregoiimr l have hereunto set myhand.

MOGIIUS FARCH. W i l ncsses 1 lvl. ltlniumc, Nicivcmin.

